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Horsepower. America's four-wheeled hot rodders have loved the stuff
for years. Until now real power's
been the exclusive property of guys with
blown vee-eights and hemi heads but at last there's a two--wheeled
equivalent to the big-inch vee--eights street rod. Enter the V-MAX. lt's a
muscle bike like no other. Designed
exclusively for America, not only to
look good, but to deliver all the horsepower Americans ever dreamed of.
It'll accelerate fast enough to shift the motorcycling world on its axis.
We're talking raw power here and the
rugged good looks that let everyone
know you mean business. The aggressive styling could have come straight
from the very best Custom shops.
WHOLE BIKE SEE THROUGH VIEW
In
back there is motorcycling's biggest rear tire' a 150/90-15 monster that
looks big enough for a dragster. lt's wrapped
around a new disc-type solid
aluminium wheel that looks sharper than any custom wheel around. The rear
end's set off by a skinnier front tire mounted on a 5-spoke 18-inch wheel.
Both ends are covered by chopped fenders
and accented by deep chrome.
There's even a three-piece stepped seat with a lockable center section
that pivots forward
to reveal the filler for an under-seat fuel tank that
helps keep the V-Max's center of gravity low. Between the bars is a
chrome
and gold speedometer: nothing else. Where the fuel is stored on other
motorcycles there's a large air filter providing
improved air flow to
downdraft carbs. Mounted in a panel above the air filter cover is a
revcounter and a temperature gauge.
There are lots of other good looking
features to impress everyone down at the drive-in, but when the V-MAX
starts rolling it's
the incredible motor that will turn the heads. This
1198cc monster produces power like nothing else before it, thanks' in
part,
to a radical cam and four massive valves per cylinder. Short ecliptical mufflers do their part to boost power and let everyone
know it
too. But what really gets this hot rod screaming is a unique new V-Boost
System. At lower rpm each of the four downdraft
carburettors feeds its own
cylinder. But as the revs rise a servo motor opens a butterfly valve
between each pair of
inlet tracts. Suddenly there are tow carbs feeding
each inlet port on an intake stroke. lt's like having a blower
without all
the mechanical losses. If anyone's unsure about the V-MAX's powerful
potential there are chrome and
polished-aluminium highlights that trace
the power flow from the large air scoops below the tank, through the motor
and out the exhaust.
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| THE 1198 cc LIQUID COOLED V-FOUR ENGINE |
For anyone just looking the V-MAX spells power. Anyone that rides
motorcycling's first real hot rod will know that
those looks aren't
deceptive. Motorcycling finally has the power and it took Yamaha's hot-rod
V-MAX to move
motorcycling one major step forward. Tires The world's
largest production-bike tire is used in rear. lt is a
V-rated 150/90-15
with a V-pattern tread. Shaft Drive A newly designed shaft drive with
stronger bevel gears
transmits the V-MAX's tremendous power. FueI Tank A
4-gallon fuel tank is mounted below the seat. Fuel is
delivered by an
electric pump and an electric reserve switch is mounted on the handlebars.
FEATURES
Chassis
Frame The tubular steel frame has a specially lowered center
section to reduce seat height. The right front
downtube and left rear
frame tube are removable to ease maintenance.
Dual rear shocks have four-way adjustable rebound damping and five
preload positions for the massive
chrome springs. Wheel travel is lOOmm.
Fork
A
large 4Omm fork is air adjustable and has a balance pipe for ease of
adjustment. An integrated aluminium
fork brake increases front-end
stability. Wheel travel is l4Omm.
Brakes
Triple ventilated disc rotors-282mm diameter-are gripped by large 45mm opposed pistons.
Wheels
A newly designed 18-inch cast wheel is used in front. A radical 15-inch solid disc wheel is used in rear.
Seat
The V-MAX has a 3-piece stepped seat design. The lockable center
section pivots forward to provide access to
the fuel filler cap.
Controls
All handlebar controls are finished in silver.
Gauges
A
single speedometer is mounted above the triple clamps. Separate tachometer
and temperature gauge are
mounted on a tank-top panel. All gauges have
white faces.
Air Filter
Air filter, fuses and hydraulic reservoir are mounted under a lockable false-tank panel.
Cable Covers
Chromed springs cover the control cables.
Headlight
A small circular headlight is used.
Air Ducts
Air ducts above the cylinders help to highlight the flow of power
from the intake system, through the motor
and out of the exhaust system.
Motor
Engine The 1198 cc liquid-cooled V-Four engine has double overhead camshafts and four valves per cylinder.
Piston
A specially lightened piston and wrist pin improve engine performance.
Crankshaft
A new hardening and heat treatment process improve crankshaft and con rod strength.
Valves
Large 30.5mm intake and 25.Omm exhaust valves are controlled by stronger valve springs.
Camshaft
A special high-performance high-lift camshaft is designed to produce maximum horsepower.
V-BOOST FUNCTION
V-Boost
A
unique V-Boost System gives a Turbo-like power boost to the V-MAX motor.
Four downdraft carburetors
feed the cylinders through individual inlet
tracts. However, the tracts between cylinders one and two and
cylinders
three and four are separated by butterfly valves. The valves are
controlled by servo motors that
measure engine rpm. At approximately 6000
rpm the servos start to open the butterfly valves until they are
completely open at 8000 rpm. With the butterfly valves open each cylinder
on an intake stroke is fed by two
carburetors,rather than a more conventional single unit. Horsepower is
considerably increased especially in
the mid-and high-rpm range.
Transmission
Power is transmitted through a five-speed gearbox and a shaft final drive.
Muffler
Short ecliptical mufflers help to maximize power output.
Carburetors
Four 35mm downdraft Mikuni carburetors mix fuel for the V-MAX motor.
